Answer: The correct option is (A). No solution.
Step-by-step explanation: Given that there are two numbers, out of which one is twice the other. And, the difference of the smaller number and half the larger number is 20.
We are to select the correct option about the solution of the equation that is created to find the smaller number.
Let 'x' represents one of the numbers.
Then, according to the given information, the other number will be '2x.'
So, the equation to find the smaller number 'x' can be created as

which is not true.
Therefore, the equation will have no solution.
Thus, (A) is the correct option.